Question

Dip red and blue litmus paper in test solutions of the things given below. Observe the change in colour. If the substance you want to test is a solid, moisten the litmus paper. Complete the table given below:-
Solutions
•Lemon juice
•Milk
•Milk of magnesia
•Curd
•Tea
•Salt solution
•Carbonated drink
•Household detergent
•Wet soil
Colour change with litmus paper:-

•Blue to red

Type of solution:-
•Acidic​

Answer 1

Answer:

A blue litmus paper when dipped into an acid gives red colour, Whereas when dipped in a base, it remains blue.

Lemon juice: Turns red

Milk: No change

Milk of magnesia: Remains blue

Curd: Turns red

Tea: It really depends on the type of tea that you’re talking about, and the acidity therein. For litmus paper, if the tea that you’re inserting the paper into is acidic, then the paper will turn red; if it is basic, the paper will turn blue.

Salt solution: No change

Carbonated drink: Turns red

Household detergent: Turns red

Wet soil: Turns red